George Stanford <gstanford at aya.yale.edu> writes: (...) > > > Then the only waste would consist of fission >products, which can be easily isolated in various >ways for 300 - 500 years, by which time their >radioactivity has decayed below any reasonable level of concern. (...) 129I: half life 1.57e7 a 99Tc: 2.11e5 a 135Cs: 2.3e6 a etc. Peter Bossew